国内外的生产实践证明,熔剂夹渣是获得优质镁合金铸件的主要障碍,这点在大型回旋体复杂件上尤为突出,其废品率有时高达37％以上。铸件毛坯工艺虽经X光检查,但由于壁厚大于30毫米,X光灵敏度不够,往往铸件到机加车间精车工序才发现熔剂夹渣而报废。这样,造成的损失太大。针对这个问题,经反复论证实验分析,又经50多次的浇注试验,取得了显著的效果。 Production practice at home and abroad proves that flux slag is the main obstacle to obtain high-quality magnesium alloy castings, which is especially prominent in large-scale complex parts of gyms. The rejection rate is sometimes as high as 37% or more. Although the blank casting process by X-ray examination, but the wall thickness greater than 30 mm, X-ray sensitivity is not enough, often castings to machine shop car finishing process found flux residue and scrapped. In this way, the loss caused by too much. In response to this problem, after repeated demonstration experimental analysis, after more than 50 pouring test, and achieved remarkable results.